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• EXHIgTT D MINING PLAN (REVISED) Extraction of sand and gravel will be accomplished by the usual open pit surface mining methods, utilizing conventional earth moving equipment. It is planned to operate the facility all year round, and progress in mining operations will vary according to market conditions and demand for products to be extracted; annual amounts to be extracted will be within limits imposed by terms of the mining permit. On this basis extraction of products will pro- ceed in phases as shown on Exhibit C, Mining Plan Map (Revised), Excavation Phase Lines, until mining of the 9.956 acre area of the mine is completed. Extraction and processing has been completed on about 2.81 acres in the Southeasterly portion of the area to be mined. (See Revised Mining Plan Map(s)). About 30,000 cubic yards of clean overburden has been stockpiled adjacent thereto as shown on Exhibit C, Mining Plan Map (Revised), Layout of Facilities. This amount of material is sufficient to backfill existing high walls at the South and East sides of the excavated site where backslopes are in excess of 5H:1V, and will be used to bring such backslopes to the required 5H:1V con- figuration when mining commences. Some broken concrete (unrein- forced) is contained in this stockpile and will be utilized as part of such backfill in pit borders. Any trash which may collect in the pit will be removed prior to backfilling. There are no asphal- tic materials now in the pit, nor will any such materials be uti- lized in backfilling and/or reclamation; only clean overburden and clean concrete without rebar will be used in such activities. As mining activities proceed, required 5H:1V backslopes at highwalls will be maintained as a fundamental part of the operation; there- fore no backfilling will be required. Sufficient clean overburden (60,000 cu. yds.) remains to be removed during future mining opera- tions; more than adequate to support maintenance of the required backslope configuration at highwalls during the life of the mine. As excavation proceeds, 12 inches of available topsoil will be re- moved and placed to a depth of 12 inches on backfilled areas ready for reclamation. Any topsoil removed in excess thereof will be stockpiled as shown on Exhibit C, Mining Plan Map (Revised), Lay- out of Facilities; this stockpile will be suitably protected from wind and water erosion to the extent that it remains in such stockpile for more than a year. There is now about 10,500 cubic yards of topsoil remaining to be stripped from the area to be mined. This amount ~~f topsoil is enough to provide 12 inches of topsoil coverage over an area of 6.5 acres, which is substantially more surface area than that requiring such treatment as a part of the reclamation plan. All excesses of topsoil will be evenly dis- tributed over the ar~=_a being landscaped during the reclamation process. (See Exhibit F, Reclamation Plan Maps (Revised)). No topsoil will be stri~~ped from any portion of the 5.471 acre ser- vice and support area of this permit.